what and how to mount drag seats?

I mounted my seats on universal sliding mounts from Jegs. The seats and the sliders and the seat covers were a package deal so I knew everything would fit together. Once you mount the seat onto the sliders, set the assembly in the drivers position with the slider at the middle setting and just see how it feels. If you have the slider in the center position, you have the option of sliding it a little forward or a little backward in the future. I am 6'-0" tall, which is maybe a little above average for an American male so the settings on the slider should be fine. If you were particularly tall or short, you may want to reconsider where to have the slider set. If you ever sell the car and the next owner cannot use the seats where they are now, unbolting the sliders and repositioning is real easy. Regarding NHRA guidelines, get your answers from the latest rule book. They update rules and regualtions every single year and you never know what may have changed from last year. Hope this helps.